Enantioselective Mannich Reaction Employing 1,3,5-Triaryl-1,3,5-triazinanes Catalyzed by Chiral-at-Metal Rhodium Complexes
作者:Jun Gong、Shi-Wu Li、Saira Qurban、Qiang Kang
DOI:10.1002/ejoc.201700463
日期:2017.7.7
Chiral-at-metal Rh(III) complexes catalyzed highly efficient enantioselective Mannich reaction of 2-acyl imidazoles with 1,3,5-triazinanes is developed, affording the corresponding adducts in 81-99% yields with up to >99% enantioselectivities. This protocol performs with 0.1 mol % of Rh(III) complex on gram scale without loss in enantioselectivity.
开发了手性金属 Rh(III) 配合物催化 2-酰基咪唑与 1,3,5-三嗪烷的高效对映选择性曼尼希反应,以 81-99% 的产率提供相应的加合物,对映选择性高达 >99%。该协议以克级规模使用 0.1 mol % 的 Rh(III) 络合物执行,而对映选择性没有损失。